- Connect WS at extension startup via maintainConnection() loop
- Auto-retry every 5 seconds silently (no connecting badge)
- Never disconnect WS based on tab count
- Rename ConnectionState 'disconnected' to 'idle', remove global 'connecting'
- Fix race condition with tabGroupQueue for syncTabGroup/disconnectEverything/onTabUpdated
- Add auto-create initial tab when Playwright connects (PLAYWRITER_AUTO_ENABLE env var)
- Add test for auto-create feature